Kao Corporation

Kao Soap Company, Ltd.

Yuzo Sumida

Harumasa Yamasaki

Takatoshi Kobayashi

Yasuhiro Doi

Kenichi Nishimura

Akira Sakurai

Rikio Tsushima

Seiichi Miyanaga

Isao Nishi

Osamu Ito

Shoichiro Harada

Akihiro Kondo

Yoshiteru Kazama

Yasuo Miura

Yuji Suzuki

Tatsuo Hiraoka

The present invention provides a process for the antistatic treatment of a resin which comprises dispersing the following organically-modified layer silicate in a synthetic resin in the state that the following specific state is attained. A novel resin composition is provided, comprising an organically-modified layer silicate compound having a specific volume resistivity of not more than 1.times.10.sup.13 .OMEGA..multidot.cm dispersed in a synthetic resin in a proportion of from 2 to 30 parts by weight based on 100 parts by weight of said synthetic resin in the state that (1) a primary aggregate and/or a secondary aggregate having a short axis length of not more than 500 nm is formed and (2) the average minimum interparticle distance is not more than 500 nm.

Process for antistatic treatment of resin and antistatic resin

A highly reactive, water-absorptive resin is prepared by (1) impregnating a highly water-absorptive resin having carboxyl or carboxylate groups and a water content of 50 percent by weight or lower with a hydrophilic polymer or monomer having a reactive group and (2) polymerizing said monomer or crosslinking said polymer with a crosslinking agent.

Process for preparing highly reactive, water-absorptive resin

A polymer in the form of particles is water-insoluble and water-sellable, containing carboxyl or carboxylate groups. It has a physiological saline absorption quantity of 40 to 90 grams per one gram of the polymer, a physiological saline absorption rate of at least 8 ml per 0.3 gram of the polymer, a gel strength of 33 to 200 g/cm2 when it has been swollen to saturation with ion-exchange water. It is useful as an absorbent in a sanitary article.

Absorptive material

A dispersion for the water-in-oil suspension polymerization is stabilized by a stabilizer comprising a polymer having 70 to 99 mole percent of a lipophilic, ethylenically unsaturated monomer units and 1 to 30 mole percent of ethylenically unsaturated monomer units having a cationic group.

Dispersion stabilizer for water-in-oil suspension polymerization

A highly water absorbent polymer having high resistance to salt solution is prepared by crosslinking a hyrophilic polymer or copolymer having carboxyl and/or carboxylate groups and water content of 10 to 40 wt. % with a crosslinking agent having at least two functional groups capable of reaction with said carboxyl and carboxylate group. An improved hydrophilic polymer is produced by polymerizing a monomer with a persulfate and a hydroperoxide as combined initiators. Another improved hydrophilic polymer is prepared by polymerizing a monomer with a persulfate and adding a hydroperoxide to the resulting polymer.

Process for producing highly water absorptive polymer

A process is disclosed for producing a water-absorbent material by dispersing and suspending an aqueous solution of a water-soluble, ethylenically unsaturated monomer in a hydrocarbon or halogenated aromatic hydrocarbon in the presence of an oil-soluble cellulose ester or cellulose ether and then carrying out the polymerization using a water-soluble radical-polymerization initiator, characterized by the feature that one or more water-soluble or water-dispersible surfactants is (are) added to the system during or after the polymerization reaction.

Process for producing water-absorbent materials having excellent water

There is provided a resin composition having resistance to hydrolysis, which comprises a polyblend of a polyvinyl chloride resin and polyester-urethane, a lead stabilizer, 0.1 to 4 weight parts, based on 100 parts of the polyblend, of one or more polyhydric alcohols selected from the group consisting of sorbitol, mannitol, erythritol, arabitol, xylitol, dulcitol and pentaerythritol and 0.5 to 10 weight parts, based on the same, of antimony trioxide. The resin composition can be molded into various products.

Growing community of inventors

Wakayama, Japan

Yuzo Sumida